public void DepthFirst(ref Node node, Vector3 position, Vector3 size, IDensityFunction densityFunction, int maxLevel, int level = 0)
{
for (var i = 0; i < 8; i++)
{
var childSize = NodeOffsets[i];
childSize.Scale(size / 2);
var childPosition = position + childSize;
var overlap = CheckOverlap(childPosition, childPosition + size / 2, densityFunction.Minimum, densityFunction.Maximum);
node.SetChildMask(i, overlap);
}
AddChildren(ref node);
if (level >= maxLevel)
{
return;
}
var count = node.GetChildrenCount();
for (var i = 0; i < count; i++)
{
ref var child = ref GetNChild(node, i);
var childIndex = node.GetNChildIndex(i);
var childPosition = NodeOffsets[childIndex];
childPosition.Scale(size / 2);
DepthFirst(ref child, position + childPosition, size / 2, densityFunction, maxLevel, level + 1);
}
public Vector3 GetNormal(IDensityFunction densityFunction, int x, int y, int z)
{
return(new Vector3(
Get(x + 1, y, z).Density - Get(x - 1, y, z).Density,
Get(x, y + 1, z).Density - Get(x, y - 1, z).Density,
Get(x, y, z + 1).Density - Get(x, y, z - 1).Density
).normalized);
}
public StochasticMeshOperator(
int numOfMesh,
IUnderlyings underlying,
IDensityFunction densityFunction)
{
NumOfMesh = numOfMesh > underlying.GetPathNum()
? numOfMesh : underlying.GetPathNum();
DensityFunction = densityFunction;
Underlying = underlying;
}
public void Intersect(IDensityFunction densityFunction)
{
var xmin = Mathf.Max(0, Mathf.FloorToInt(densityFunction.Minimum.x));
var xmax = Mathf.Min(Width - 1, Mathf.CeilToInt(densityFunction.Maximum.x));
var ymin = Mathf.Max(0, Mathf.FloorToInt(densityFunction.Minimum.y));
var ymax = Mathf.Min(Height - 1, Mathf.CeilToInt(densityFunction.Maximum.y));
var zmin = Mathf.Max(0, Mathf.FloorToInt(densityFunction.Minimum.z));
var zmax = Mathf.Min(Length - 1, Mathf.CeilToInt(densityFunction.Maximum.z));
for (var x = xmin; x < xmax; x++)
{
for (var y = ymin; y < ymax; y++)
{
for (var z = zmin; z < zmax; z++)
{
_data[GetIndex(x, y, z)].Density = Mathf.Max(densityFunction.Value(new Vector3(x, y, z)), _data[GetIndex(x, y, z)].Density);
_data[GetIndex(x, y, z)].Normal = GetNormal(densityFunction, x, y, z);
}
}
}
}
public DensityChunkGenerator(IDensityFunction densityFunction)
{
_densityFunction = densityFunction;
}
